Abstract
In this paper, a miniaturization method is proposed for developing micro distributed generation for a micro smart grid simulator. The micro smart grid simulator is a fault simulator that was built to test and verify the new operation control algorithms for smart grids in the laboratory and has a size downscaled to one-thousandth of that of an actual smart grid. The micro distributed generation was designed in a multi-layered structure (dimension: 13 × 20 cm2), in which each function is implemented in several layers, to satisfy the size requirements. Next, the grid synchronization and PQ control algorithms required for the distributed generation were developed. A three-phase 19 V power system was built, and a 19 V–7.5 W three-phase micro distributed generation was realized through experimental verification. In addition, by verifying the effectiveness through grid synchronization and 7.5 W PQ control experiments, it was confirmed that the micro distributed generation based on the proposed miniaturization method can be implemented in a micro smart grid simulator.
Highlights
Generation for a Micro Smart GridPower systems are rapidly evolving into smart grids (SGs) that combine a digital communication network, which enables bidirectional communication between electricity producers and consumers, with power grids installed with distributed generation (DG)systems that maximize the efficiency of energy use
DG systems, exhibit different fault phenomena than those occurring in the existing power grids
These basic roles include grid synchronization, protection and coordination, and PQ control based on connection operation with the micro
Summary
Generation for a Micro Smart GridPower systems are rapidly evolving into smart grids (SGs) that combine a digital communication network, which enables bidirectional communication between electricity producers and consumers, with power grids installed with distributed generation (DG)systems that maximize the efficiency of energy use. Power systems are rapidly evolving into smart grids (SGs) that combine a digital communication network, which enables bidirectional communication between electricity producers and consumers, with power grids installed with distributed generation (DG). Several algorithms have been proposed for the protection and control of power grids with tree structures [1,2]. These algorithms cannot be applied directly, because the SGs, equipped with. The fault phenomena depend on the number of installed DG systems and their location. To solve this problem, new algorithms for protection and control of SGs have been proposed [3,4,5]. To apply the proposed algorithms to an actual SG, reliability must be ensured through sufficient and diverse fault analysis and tests performed on the SG
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